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 (
    423, 424, 455, 433, 495, 453, 468, 467, 
    418, 420, 421, 422, 406, 407, 437, 494, 
    454, 442, 426, 429, 428, 410, 438, 440, 
    443, 463, 460, 450, 446, 447, 476, 457, 
    482, 483, 472, 441, 405, 403, 485, 492, 
    479, 480, 413, 401, 449, 474, 473, 448, 
    493, 409, 404, 456, 469, 431, 466, 402, 
    439, 484, 470, 490, 451, 491, 411, 486, 
    458, 459, 461, 462, 471, 425, 427, 416, 
    419, 464, 465, 432, 444, 445, 477, 478, 
    487, 488, 434, 435, 515, 481, 489, 415, 
    430, 414, 475, 452, 412, 417, 503, 514
  )

Query time 0.00047

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "4.40"
    },
    "nested_loop": [
      {
        "table": {
          "table_name": "g",
          "access_type": "system",
          "possible_keys": [
            "PRIMARY"
          ],
          "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": "400"
          },
          "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": [
            "const"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "1.00",
            "eval_cost": "0.20",
            "prefix_cost": "1.20",
            "data_read_per_join": "104"
          },
          "used_columns": [
            "feature_id",
            "purpose",
            "group_id"
          ]
        }
      },
      {
        "table": {
          "table_name": "p",
          "access_type": "ref",
          "possible_keys": [
            "PRIMARY",
            "idx_group_id"
          ],
          "key": "idx_group_id",
          "used_key_parts": [
            "group_id"
          ],
          "key_length": "3",
          "ref": [
            "const"
          ],
          "rows_examined_per_scan": 6,
          "rows_produced_per_join": 3,
          "filtered": "50.00",
          "cost_info": {
            "read_cost": "2.00",
            "eval_cost": "0.60",
            "prefix_cost": "4.40",
            "data_read_per_join": "48"
          },
          "used_columns": [
            "product_id",
            "parent_product_id",
            "group_id"
          ],
          "attached_condition": "(`danishecarter_latest`.`p`.`product_id` in (423,424,455,433,495,453,468,467,418,420,421,422,406,407,437,494,454,442,426,429,428,410,438,440,443,463,460,450,446,447,476,457,482,483,472,441,405,403,485,492,479,480,413,401,449,474,473,448,493,409,404,456,469,431,466,402,439,484,470,490,451,491,411,486,458,459,461,462,471,425,427,416,419,464,465,432,444,445,477,478,487,488,434,435,515,481,489,415,430,414,475,452,412,417,503,514))"
        }
      }
    ]
  }
}