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 (
    93877, 93878, 93879, 93880, 93881, 94034, 
    94035, 94036, 94037, 94038, 94039, 
    94040, 94041, 94042, 94043, 94044, 
    94045, 94046, 94047, 94048, 94049, 
    94050, 94051, 94052, 94053, 94054, 
    94055, 94056, 94057, 94058, 94059, 
    94060, 94061, 94062, 94063, 94161, 
    94162, 94163, 94164, 94333, 94334, 
    94335, 94336, 94337, 94338, 94339, 
    94340, 94341, 94342, 94343, 94344, 
    94345, 94346, 94347, 94348, 94349, 
    94350, 94351, 94352, 94353, 94354, 
    94355, 94356, 94357, 94358, 94359, 
    94360, 94361, 94362, 94363, 94364, 
    94365, 94366, 94435, 94442, 94443, 
    94444, 94445, 94446, 94592, 94593, 
    94594, 94650, 94662, 94766, 94767, 
    94768, 94769, 94770, 94771, 94772, 
    94773, 94774, 94775, 94776, 94777
  )

Query time 0.00071

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "1.05"
    },
    "nested_loop": [
      {
        "table": {
          "table_name": "f",
          "access_type": "ALL",
          "possible_keys": [
            "idx_group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "0.25",
            "eval_cost": "0.10",
            "prefix_cost": "0.35",
            "data_read_per_join": "104"
          },
          "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": [
            "nuie_scalesta_net.f.group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "0.25",
            "eval_cost": "0.10",
            "prefix_cost": "0.70",
            "data_read_per_join": "400"
          },
          "used_columns": [
            "id",
            "code"
          ]
        }
      },
      {
        "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": [
            "nuie_scalesta_net.f.group_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "index_condition": "(`nuie_scalesta_net`.`p`.`product_id` in (93877,93878,93879,93880,93881,94034,94035,94036,94037,94038,94039,94040,94041,94042,94043,94044,94045,94046,94047,94048,94049,94050,94051,94052,94053,94054,94055,94056,94057,94058,94059,94060,94061,94062,94063,94161,94162,94163,94164,94333,94334,94335,94336,94337,94338,94339,94340,94341,94342,94343,94344,94345,94346,94347,94348,94349,94350,94351,94352,94353,94354,94355,94356,94357,94358,94359,94360,94361,94362,94363,94364,94365,94366,94435,94442,94443,94444,94445,94446,94592,94593,94594,94650,94662,94766,94767,94768,94769,94770,94771,94772,94773,94774,94775,94776,94777))",
          "cost_info": {
            "read_cost": "0.25",
            "eval_cost": "0.10",
            "prefix_cost": "1.05",
            "data_read_per_join": "16"
          },
          "used_columns": [
            "product_id",
            "parent_product_id",
            "group_id"
          ]
        }
      }
    ]
  }
}