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SELECT 
  SQL_CALC_FOUND_ROWS products.product_id, 
  descr1.product as product, 
  companies.company as company_name, 
  products.product_type, 
  products.parent_product_id 
FROM 
  q_products as products 
  LEFT JOIN q_product_options_inventory as inventory ON inventory.product_id = products.product_id 
  LEFT JOIN q_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'en' 
  LEFT JOIN q_product_prices as prices ON prices.product_id = products.product_id 
  AND prices.lower_limit = 1 
  LEFT JOIN q_companies AS companies ON companies.company_id = products.company_id 
  INNER JOIN q_products_categories as products_categories ON products_categories.product_id = products.product_id 
  INNER JOIN q_categories ON q_categories.category_id = products_categories.category_id 
  AND (
    q_categories.usergroup_ids = '' 
    OR FIND_IN_SET(0, q_categories.usergroup_ids) 
    OR FIND_IN_SET(1, q_categories.usergroup_ids)
  ) 
  AND q_categories.status IN ('A', 'H') 
WHERE 
  1 
  AND q_categories.category_id IN (
    6, 
    7, 
    9, 
    148, 
    160, 
    169, 
    185, 
    368, 
    407, 
    426, 
    439, 
    440, 
    441, 
    444, 
    446, 
    447, 
    455, 
    456, 
    461, 
    466, 
    477, 
    520, 
    537, 
    61, 
    62, 
    149, 
    159, 
    161, 
    170, 
    186, 
    369, 
    408, 
    427, 
    442, 
    443, 
    448, 
    462, 
    467, 
    478, 
    528, 
    538, 
    63, 
    147, 
    150, 
    162, 
    168, 
    171, 
    187, 
    370, 
    409, 
    449, 
    454, 
    463, 
    468, 
    530, 
    539, 
    64, 
    151, 
    163, 
    172, 
    184, 
    189, 
    371, 
    450, 
    460, 
    464, 
    540, 
    567, 
    65, 
    152, 
    164, 
    173, 
    292, 
    372, 
    378, 
    451, 
    476, 
    541, 
    568, 
    153, 
    165, 
    174, 
    360, 
    373, 
    411, 
    452, 
    479, 
    571, 
    154, 
    166, 
    175, 
    374, 
    406, 
    453, 
    465, 
    587, 
    155, 
    167, 
    176, 
    425, 
    482, 
    536, 
    156, 
    177, 
    438, 
    495, 
    558, 
    157, 
    445, 
    563, 
    158, 
    179, 
    519, 
    570, 
    180, 
    584, 
    596, 
    367, 
    181, 
    182, 
    619, 
    183, 
    188, 
    244, 
    481, 
    518, 
    521, 
    522, 
    529, 
    531
  ) 
  AND companies.status = 'A' 
  AND (
    CASE products.tracking WHEN 'O' THEN inventory.amount > 0 WHEN 'B' THEN products.amount > 0 ELSE 1 END
  ) 
  AND (
    products.usergroup_ids = '' 
    OR FIND_IN_SET(0, products.usergroup_ids) 
    OR FIND_IN_SET(1, products.usergroup_ids)
  ) 
  AND products.status IN ('A') 
  AND prices.usergroup_id IN (0, 0, 1) 
  AND products.parent_product_id = 0 
GROUP BY 
  products.product_id 
ORDER BY 
  products.timestamp desc, 
  products.product_id ASC 
LIMIT 
  752, 16

Query time 0.05669

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "2373.65"
    },
    "ordering_operation": {
      "using_filesort": true,
      "grouping_operation": {
        "using_temporary_table": true,
        "using_filesort": false,
        "nested_loop": [
          {
            "table": {
              "table_name": "inventory",
              "access_type": "system",
              "possible_keys": [
                "pc"
              ],
              "rows_examined_per_scan": 0,
              "rows_produced_per_join": 1,
              "filtered": "0.00",
              "const_row_not_found": true,
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "0.20",
                "prefix_cost": "0.00",
                "data_read_per_join": "976"
              },
              "used_columns": [
                "product_id",
                "amount"
              ]
            }
          },
          {
            "table": {
              "table_name": "products_categories",
              "access_type": "range",
              "possible_keys": [
                "PRIMARY",
                "pt"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "category_id"
              ],
              "key_length": "3",
              "rows_examined_per_scan": 2808,
              "rows_produced_per_join": 2808,
              "filtered": "100.00",
              "using_index": true,
              "cost_info": {
                "read_cost": "632.78",
                "eval_cost": "561.60",
                "prefix_cost": "1194.38",
                "data_read_per_join": "43K"
              },
              "used_columns": [
                "product_id",
                "category_id"
              ],
              "attached_condition": "(`portal`.`products_categories`.`category_id` in (6,7,9,148,160,169,185,368,407,426,439,440,441,444,446,447,455,456,461,466,477,520,537,61,62,149,159,161,170,186,369,408,427,442,443,448,462,467,478,528,538,63,147,150,162,168,171,187,370,409,449,454,463,468,530,539,64,151,163,172,184,189,371,450,460,464,540,567,65,152,164,173,292,372,378,451,476,541,568,153,165,174,360,373,411,452,479,571,154,166,175,374,406,453,465,587,155,167,176,425,482,536,156,177,438,495,558,157,445,563,158,179,519,570,180,584,596,367,181,182,619,183,188,244,481,518,521,522,529,531))"
            }
          },
          {
            "table": {
              "table_name": "products",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "status",
                "idx_parent_product_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "portal.products_categories.product_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 2490,
              "filtered": "88.70",
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "498.12",
                "prefix_cost": "1755.99",
                "data_read_per_join": "14M"
              },
              "used_columns": [
                "product_id",
                "product_type",
                "status",
                "company_id",
                "amount",
                "timestamp",
                "usergroup_ids",
                "tracking",
                "parent_product_id"
              ],
              "attached_condition": "((`portal`.`products`.`parent_product_id` = 0) and (case `portal`.`products`.`tracking` when 'O' then <cache>((NULL > 0)) when 'B' then (`portal`.`products`.`amount` > 0) else 1 end) and ((`portal`.`products`.`usergroup_ids` = '') or find_in_set(0,`portal`.`products`.`usergroup_ids`) or find_in_set(1,`portal`.`products`.`usergroup_ids`)) and (`portal`.`products`.`status` = 'A'))"
            }
          },
          {
            "table": {
              "table_name": "companies",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "company_id"
              ],
              "key_length": "4",
              "ref": [
                "portal.products.company_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 249,
              "filtered": "10.00",
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "49.81",
                "prefix_cost": "2254.10",
                "data_read_per_join": "1M"
              },
              "used_columns": [
                "company_id",
                "status",
                "company"
              ],
              "attached_condition": "(`portal`.`companies`.`status` = 'A')"
            }
          },
          {
            "table": {
              "table_name": "q_categories",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "c_status",
                "p_category_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "category_id"
              ],
              "key_length": "3",
              "ref": [
                "portal.products_categories.category_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 49,
              "filtered": "20.00",
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "9.96",
                "prefix_cost": "2303.91",
                "data_read_per_join": "131K"
              },
              "used_columns": [
                "category_id",
                "usergroup_ids",
                "status"
              ],
              "attached_condition": "(((`portal`.`q_categories`.`usergroup_ids` = '') or find_in_set(0,`portal`.`q_categories`.`usergroup_ids`) or find_in_set(1,`portal`.`q_categories`.`usergroup_ids`)) and (`portal`.`q_categories`.`status` in ('A','H')))"
            }
          },
          {
            "table": {
              "table_name": "descr1",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "product_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id",
                "lang_code"
              ],
              "key_length": "9",
              "ref": [
                "portal.products_categories.product_id",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 49,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "9.96",
                "prefix_cost": "2313.88",
                "data_read_per_join": "189K"
              },
              "used_columns": [
                "product_id",
                "lang_code",
                "product"
              ]
            }
          },
          {
            "table": {
              "table_name": "prices",
              "access_type": "ref",
              "possible_keys": [
                "usergroup",
                "product_id",
                "lower_limit",
                "usergroup_id"
              ],
              "key": "usergroup",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "portal.products_categories.product_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 49,
              "filtered": "99.95",
              "using_index": true,
              "cost_info": {
                "read_cost": "49.81",
                "eval_cost": "9.96",
                "prefix_cost": "2373.65",
                "data_read_per_join": "1K"
              },
              "used_columns": [
                "product_id",
                "lower_limit",
                "usergroup_id"
              ],
              "attached_condition": "((`portal`.`prices`.`lower_limit` = 1) and (`portal`.`prices`.`usergroup_id` in (0,0,1)))"
            }
          }
        ]
      }
    }
  }
}

Result

product_id	product	company_name	product_type
31069	Colourful Mini Plastic Flower Pot Succulent Plant Flowerpot Home Office Decor	J D F General Trading LLC	P
31070	Aquarium Jellyfish Decoration Glowing Effect Fish Tank Artificial Ornament	J D F General Trading LLC	P
31071	Dog Claw Towel Dog Cat Cleaning Towel Pet Dirty Paw Carpet High Suction Towel	J D F General Trading LLC	P
31072	58-Inch Heavy Duty Waterproof Bbq Cover Gas Barbecue Grill For Patio Protector	J D F General Trading LLC	P
31074	6Pcs Reusable Gas Range Stove Top Burner Protector Liner Cover For Cleaning	J D F General Trading LLC	P
31077	300 Ml Wood Aroma Humidifier For Office, Home Living Room, Bedroom	J D F General Trading LLC	P
31079	Green Eco-Friendly Waterproof Grafting Tape Graft Membrane Garden Bind Belt 2018	J D F General Trading LLC	P
31080	5Oz Stainless Steel Pocket Hip Flask Alcohol Whiskey Liquor Screw Cap	J D F General Trading LLC	P
31081	Bidet Spray Chrome Hygienic Toilet Shower Head Hose Set Muslim	J D F General Trading LLC	P
31082	Cake Decorating Turntable Rotating Revolving Icing Kitchen Display Stand 28 Cm	J D F General Trading LLC	P
31083	2 Pcs Pe Foam 3 D Self-Adhesive Wall Stickers Decor Tile Waterproof Wall Stickers	J D F General Trading LLC	P
31086	Non-Stick Plastic Sushi Roll Mat Made Kitchen Diy Mould Roller Mat New	J D F General Trading LLC	P
31087	Foldable Storage Bag Clothes Blanket Quilt Closet Sweater Organizer Box Pouch	J D F General Trading LLC	P
31088	Himalayan Natural Usb Plug Crystal Rock Night Light Salt Lamp Ionic Air Purifier	J D F General Trading LLC	P
31089	Spiral Vegetable Fruit Slicer Cutter Grater Twister Peeler Kitchen Gadgets Tools	J D F General Trading LLC	P
31091	Mini Heater Mini Heater Mini Electric Heater Electric Fan	J D F General Trading LLC	P