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 (
    814, 798, 797, 795, 765, 764, 763, 762, 
    809, 810, 715, 709, 708, 705, 697, 696, 
    695, 693, 682, 676, 622, 620, 619, 615, 
    608, 607, 600, 212, 209, 206, 196, 187, 
    184, 181, 177, 154, 151
  )

Query time 0.00058

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "45.51"
    },
    "nested_loop": [
      {
        "table": {
          "table_name": "p",
          "access_type": "ALL",
          "possible_keys": [
            "PRIMARY",
            "idx_group_id"
          ],
          "rows_examined_per_scan": 190,
          "rows_produced_per_join": 36,
          "filtered": "19.47",
          "cost_info": {
            "read_cost": "15.92",
            "eval_cost": "3.70",
            "prefix_cost": "19.62",
            "data_read_per_join": "591"
          },
          "used_columns": [
            "product_id",
            "parent_product_id",
            "group_id"
          ],
          "attached_condition": "(`betaatif_store`.`p`.`product_id` in (814,798,797,795,765,764,763,762,809,810,715,709,708,705,697,696,695,693,682,676,622,620,619,615,608,607,600,212,209,206,196,187,184,181,177,154,151))"
        }
      },
      {
        "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": [
            "betaatif_store.p.group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 36,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "9.25",
            "eval_cost": "3.70",
            "prefix_cost": "32.57",
            "data_read_per_join": "3K"
          },
          "used_columns": [
            "feature_id",
            "purpose",
            "group_id"
          ]
        }
      },
      {
        "table": {
          "table_name": "g",
          "access_type": "eq_ref",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "id"
          ],
          "key_length": "3",
          "ref": [
            "betaatif_store.p.group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 36,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "9.25",
            "eval_cost": "3.70",
            "prefix_cost": "45.52",
            "data_read_per_join": "14K"
          },
          "used_columns": [
            "id",
            "code"
          ]
        }
      }
    ]
  }
}