SELECT 
  MIN(q_product_prices.price) as min, 
  MAX(q_product_prices.price) as max 
FROM 
  q_product_prices 
  LEFT JOIN q_products as products ON products.product_id = q_product_prices.product_id 
  LEFT JOIN q_product_prices as prices_2 ON q_product_prices.product_id = prices_2.product_id 
  AND q_product_prices.price > prices_2.price 
  AND prices_2.lower_limit = 1 
  AND prices_2.usergroup_id IN (0, 0, 1) 
  LEFT JOIN q_product_options_inventory as inventory ON inventory.product_id = products.product_id 
  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 
  products.status IN ('A') 
  AND q_categories.category_id IN (
    264, 265, 266, 267, 268, 269, 270, 272
  ) 
  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 q_product_prices.lower_limit = 1 
  AND q_product_prices.usergroup_id IN (0, 0, 1) 
  AND prices_2.price IS NULL

Query time 0.00322

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "221.12"
    },
    "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": "q_categories",
          "access_type": "range",
          "possible_keys": [
            "PRIMARY",
            "c_status",
            "p_category_id"
          ],
          "key": "p_category_id",
          "used_key_parts": [
            "category_id"
          ],
          "key_length": "3",
          "rows_examined_per_scan": 8,
          "rows_produced_per_join": 1,
          "filtered": "20.00",
          "using_index": true,
          "cost_info": {
            "read_cost": "10.89",
            "eval_cost": "0.32",
            "prefix_cost": "11.21",
            "data_read_per_join": "4K"
          },
          "used_columns": [
            "category_id",
            "usergroup_ids",
            "status"
          ],
          "attached_condition": "((`portal`.`q_categories`.`category_id` in (264,265,266,267,268,269,270,272)) and ((`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": "products_categories",
          "access_type": "ref",
          "possible_keys": [
            "PRIMARY",
            "pt"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "category_id"
          ],
          "key_length": "3",
          "ref": [
            "portal.q_categories.category_id"
          ],
          "rows_examined_per_scan": 156,
          "rows_produced_per_join": 249,
          "filtered": "100.00",
          "using_index": true,
          "cost_info": {
            "read_cost": "7.82",
            "eval_cost": "49.92",
            "prefix_cost": "68.95",
            "data_read_per_join": "3K"
          },
          "used_columns": [
            "product_id",
            "category_id"
          ],
          "attached_condition": "(`portal`.`products_categories`.`product_id` is not null)"
        }
      },
      {
        "table": {
          "table_name": "products",
          "access_type": "eq_ref",
          "possible_keys": [
            "PRIMARY",
            "status"
          ],
          "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": 232,
          "filtered": "93.11",
          "cost_info": {
            "read_cost": "0.00",
            "eval_cost": "46.48",
            "prefix_cost": "118.87",
            "data_read_per_join": "1M"
          },
          "used_columns": [
            "product_id",
            "status",
            "company_id",
            "amount",
            "usergroup_ids",
            "tracking"
          ],
          "attached_condition": "((`portal`.`products`.`status` = 'A') 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`)))"
        }
      },
      {
        "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": 23,
          "filtered": "10.00",
          "cost_info": {
            "read_cost": "0.00",
            "eval_cost": "4.65",
            "prefix_cost": "165.35",
            "data_read_per_join": "128K"
          },
          "used_columns": [
            "company_id",
            "status"
          ],
          "attached_condition": "(`portal`.`companies`.`status` = 'A')"
        }
      },
      {
        "table": {
          "table_name": "q_product_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": 23,
          "filtered": "99.95",
          "index_condition": "((`portal`.`q_product_prices`.`lower_limit` = 1) and (`portal`.`q_product_prices`.`usergroup_id` in (0,0,1)))",
          "cost_info": {
            "read_cost": "23.24",
            "eval_cost": "4.65",
            "prefix_cost": "193.24",
            "data_read_per_join": "557"
          },
          "used_columns": [
            "product_id",
            "price",
            "lower_limit",
            "usergroup_id"
          ]
        }
      },
      {
        "table": {
          "table_name": "prices_2",
          "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": 2,
          "filtered": "10.00",
          "not_exists": true,
          "cost_info": {
            "read_cost": "23.23",
            "eval_cost": "0.46",
            "prefix_cost": "221.12",
            "data_read_per_join": "55"
          },
          "used_columns": [
            "product_id",
            "price",
            "lower_limit",
            "usergroup_id"
          ],
          "attached_condition": "(<if>(found_match(prices_2), isnull(`portal`.`prices_2`.`price`), true) and <if>(is_not_null_compl(prices_2), ((`portal`.`prices_2`.`lower_limit` = 1) and (`portal`.`q_product_prices`.`price` > `portal`.`prices_2`.`price`) and (`portal`.`prices_2`.`usergroup_id` in (0,0,1))), true))"
        }
      }
    ]
  }
}