SELECT 
  f.feature_id, 
  f.purpose, 
  p.product_id, 
  p.parent_product_id, 
  g.id, 
  g.code 
FROM 
  cscart_product_variation_group_features AS f 
  INNER JOIN cscart_product_variation_groups AS g ON f.group_id = g.id 
  INNER JOIN cscart_product_variation_group_products AS p ON f.group_id = p.group_id 
WHERE 
  p.product_id IN (
    392224, 392211, 392226, 392228, 392223, 
    392225, 392227, 392210, 392230, 392231, 
    392229, 392232, 392236, 392237, 392235, 
    392234, 392238, 392239, 392241, 392233, 
    392240, 392255, 392253, 392254, 392252, 
    392242, 392243, 392249, 392244, 392250, 
    392245, 392246, 392251, 392247, 392248, 
    392222, 392221, 392220, 392219
  )

Query time 0.00052

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "167.78"
    },
    "nested_loop": [
      {
        "table": {
          "table_name": "p",
          "access_type": "range",
          "possible_keys": [
            "PRIMARY",
            "idx_group_id"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "product_id"
          ],
          "key_length": "3",
          "rows_examined_per_scan": 39,
          "rows_produced_per_join": 39,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "46.85",
            "eval_cost": "7.80",
            "prefix_cost": "54.65",
            "data_read_per_join": "624"
          },
          "used_columns": [
            "product_id",
            "parent_product_id",
            "group_id"
          ],
          "attached_condition": "(`webmarco`.`p`.`product_id` in (392224,392211,392226,392228,392223,392225,392227,392210,392230,392231,392229,392232,392236,392237,392235,392234,392238,392239,392241,392233,392240,392255,392253,392254,392252,392242,392243,392249,392244,392250,392245,392246,392251,392247,392248,392222,392221,392220,392219))"
        }
      },
      {
        "table": {
          "table_name": "g",
          "access_type": "eq_ref",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "id"
          ],
          "key_length": "3",
          "ref": [
            "webmarco.p.group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 39,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "39.00",
            "eval_cost": "7.80",
            "prefix_cost": "101.45",
            "data_read_per_join": "15K"
          },
          "used_columns": [
            "id",
            "code"
          ]
        }
      },
      {
        "table": {
          "table_name": "f",
          "access_type": "ref",
          "possible_keys": [
            "idx_group_id"
          ],
          "key": "idx_group_id",
          "used_key_parts": [
            "group_id"
          ],
          "key_length": "3",
          "ref": [
            "webmarco.p.group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 55,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "55.27",
            "eval_cost": "11.05",
            "prefix_cost": "167.78",
            "data_read_per_join": "5K"
          },
          "used_columns": [
            "feature_id",
            "purpose",
            "group_id"
          ]
        }
      }
    ]
  }
}