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 (
    95362, 95363, 95364, 95392, 95393, 95442, 
    95592, 95593, 95594, 95595, 95596, 
    95597, 95598, 95599, 95600, 95601, 
    95602, 95603, 95604, 95605, 95606, 
    95607, 95608, 95609, 95610, 95611, 
    95612, 95613, 95614, 95615, 95616, 
    95617, 95618, 95619, 95620, 95621, 
    95622, 95623, 95624, 95625, 95626, 
    95627, 95628, 95764, 95766, 95767, 
    95780, 95781, 95782, 95783, 95784, 
    95785, 95829, 95890, 95893, 95925, 
    95926, 96490, 96491, 96492, 96493, 
    96531, 96532, 96533, 96534, 96535, 
    96536, 96562, 96563, 96630, 96631, 
    96632, 96633, 96634, 96635, 96636, 
    96637, 96638, 96639, 96640, 96641, 
    96642, 96643, 96644, 96645, 96646, 
    96647, 96648, 96649, 96650, 96651, 
    96652, 96653, 96654, 96655, 96656
  )

Query time 0.00072

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 (95362,95363,95364,95392,95393,95442,95592,95593,95594,95595,95596,95597,95598,95599,95600,95601,95602,95603,95604,95605,95606,95607,95608,95609,95610,95611,95612,95613,95614,95615,95616,95617,95618,95619,95620,95621,95622,95623,95624,95625,95626,95627,95628,95764,95766,95767,95780,95781,95782,95783,95784,95785,95829,95890,95893,95925,95926,96490,96491,96492,96493,96531,96532,96533,96534,96535,96536,96562,96563,96630,96631,96632,96633,96634,96635,96636,96637,96638,96639,96640,96641,96642,96643,96644,96645,96646,96647,96648,96649,96650,96651,96652,96653,96654,96655,96656))",
          "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"
          ]
        }
      }
    ]
  }
}