SELECT 
  v.product_id, 
  v.feature_id, 
  v.value, 
  v.value_int, 
  v.variant_id, 
  f.feature_type, 
  fd.description, 
  fd.prefix, 
  f.parent_id, 
  f.position, 
  gf.position as gposition, 
  vd.variant, 
  fd.suffix 
FROM 
  q_product_features as f 
  LEFT JOIN q_product_features_values as v ON v.feature_id = f.feature_id 
  LEFT JOIN q_product_features_descriptions as fd ON fd.feature_id = v.feature_id 
  AND fd.lang_code = 'en' 
  LEFT JOIN q_product_feature_variants fv ON fv.variant_id = v.variant_id 
  LEFT JOIN q_product_feature_variant_descriptions as vd ON vd.variant_id = fv.variant_id 
  AND vd.lang_code = 'en' 
  LEFT JOIN q_product_features as gf ON gf.feature_id = f.parent_id 
  AND gf.feature_type = 'G' 
WHERE 
  f.status IN ('A') 
  AND v.product_id in (
    37516, 37527, 37528, 37530, 37532, 37534, 
    37535, 37536, 37537, 37544, 37548, 
    37550, 37552, 37553, 37554, 37555, 
    37557, 37559, 37832, 37867, 37868, 
    37869, 37874, 37884, 37885, 37889, 
    37890, 37893, 38150
  ) 
  AND f.display_on_catalog = 'Y' 
  AND f.feature_id in (2) 
  AND (
    f.categories_path = '' 
    OR FIND_IN_SET(2, f.categories_path) 
    OR FIND_IN_SET(3, f.categories_path) 
    OR FIND_IN_SET(39, f.categories_path)
  ) 
  AND IF(
    f.parent_id, 
    (
      SELECT 
        status 
      FROM 
        q_product_features as df 
      WHERE 
        df.feature_id = f.parent_id
    ), 
    'A'
  ) IN ('A') 
  AND (
    v.variant_id != 0 
    OR (
      f.feature_type != 'C' 
      AND v.value != ''
    ) 
    OR (f.feature_type = 'C') 
    OR v.value_int != ''
  ) 
  AND v.lang_code = 'en' 
ORDER BY 
  fd.description, 
  fv.position

Query time 0.00207

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "203.21"
    },
    "ordering_operation": {
      "using_temporary_table": true,
      "using_filesort": true,
      "nested_loop": [
        {
          "table": {
            "table_name": "f",
            "access_type": "const",
            "possible_keys": [
              "PRIMARY",
              "status"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "feature_id"
            ],
            "key_length": "3",
            "ref": [
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 1,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "0.00",
              "eval_cost": "0.20",
              "prefix_cost": "0.00",
              "data_read_per_join": "432"
            },
            "used_columns": [
              "feature_id",
              "feature_type",
              "categories_path",
              "parent_id",
              "display_on_catalog",
              "status",
              "position"
            ]
          }
        },
        {
          "table": {
            "table_name": "v",
            "access_type": "range",
            "possible_keys": [
              "PRIMARY",
              "fl",
              "variant_id",
              "lang_code",
              "product_id",
              "fpl"
            ],
            "key": "fpl",
            "used_key_parts": [
              "feature_id",
              "product_id",
              "lang_code"
            ],
            "key_length": "12",
            "rows_examined_per_scan": 41,
            "rows_produced_per_join": 41,
            "filtered": "100.00",
            "index_condition": "((`portal`.`v`.`feature_id` = 2) and (`portal`.`v`.`product_id` in (37516,37527,37528,37530,37532,37534,37535,37536,37537,37544,37548,37550,37552,37553,37554,37555,37557,37559,37832,37867,37868,37869,37874,37884,37885,37889,37890,37893,38150)) and (`portal`.`v`.`lang_code` = 'en'))",
            "cost_info": {
              "read_cost": "78.21",
              "eval_cost": "8.20",
              "prefix_cost": "86.41",
              "data_read_per_join": "31K"
            },
            "used_columns": [
              "feature_id",
              "product_id",
              "variant_id",
              "value",
              "value_int",
              "lang_code"
            ],
            "attached_condition": "((if('1',(/* select#2 */ select 'A' from `portal`.`q_product_features` `df` where 1),'A') = 'A') and ((`portal`.`v`.`variant_id` <> 0) or (<cache>(('E' <> 'C')) and (`portal`.`v`.`value` <> '')) or <cache>(('E' = 'C')) or (`portal`.`v`.`value_int` <> '')))",
            "attached_subqueries": [
              {
                "dependent": true,
                "cacheable": false,
                "query_block": {
                  "select_id": 2,
                  "cost_info": {
                    "query_cost": "1.00"
                  },
                  "table": {
                    "table_name": "df",
                    "access_type": "const",
                    "possible_keys": [
                      "PRIMARY"
                    ],
                    "key": "PRIMARY",
                    "used_key_parts": [
                      "feature_id"
                    ],
                    "key_length": "3",
                    "ref": [
                      "const"
                    ],
                    "rows_examined_per_scan": 1,
                    "rows_produced_per_join": 1,
                    "filtered": "100.00",
                    "cost_info": {
                      "read_cost": "0.00",
                      "eval_cost": "0.20",
                      "prefix_cost": "0.00",
                      "data_read_per_join": "432"
                    },
                    "used_columns": [
                      "feature_id",
                      "status"
                    ]
                  }
                }
              }
            ]
          }
        },
        {
          "table": {
            "table_name": "fd",
            "access_type": "const",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "feature_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "const",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 41,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "1.00",
              "eval_cost": "8.20",
              "prefix_cost": "95.61",
              "data_read_per_join": "62K"
            },
            "used_columns": [
              "feature_id",
              "description",
              "prefix",
              "suffix",
              "lang_code"
            ]
          }
        },
        {
          "table": {
            "table_name": "fv",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id"
            ],
            "key_length": "3",
            "ref": [
              "portal.v.variant_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 41,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "41.00",
              "eval_cost": "8.20",
              "prefix_cost": "144.81",
              "data_read_per_join": "46K"
            },
            "used_columns": [
              "variant_id",
              "position"
            ]
          }
        },
        {
          "table": {
            "table_name": "vd",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "variant_id",
              "lang_code"
            ],
            "key_length": "9",
            "ref": [
              "portal.fv.variant_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 41,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "41.00",
              "eval_cost": "8.20",
              "prefix_cost": "194.01",
              "data_read_per_join": "123K"
            },
            "used_columns": [
              "variant_id",
              "variant",
              "lang_code"
            ]
          }
        },
        {
          "table": {
            "table_name": "gf",
            "access_type": "const",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "feature_id"
            ],
            "key_length": "3",
            "ref": [
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 41,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "1.00",
              "eval_cost": "8.20",
              "prefix_cost": "203.21",
              "data_read_per_join": "17K"
            },
            "used_columns": [
              "feature_id",
              "feature_type",
              "position"
            ],
            "attached_condition": "<if>(is_not_null_compl(gf), (`portal`.`gf`.`feature_type` = 'G'), true)"
          }
        }
      ]
    }
  }
}