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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 (
    621, 860, 619, 861, 5653, 59, 122, 5662, 
    61, 2992, 5663, 123, 63, 58, 121, 124, 
    62, 785, 784, 786, 782, 787, 783, 1511, 
    3586, 1924, 1773, 3665, 3666, 4625, 
    6421, 7262, 5971, 1727, 5957, 6422, 
    6423, 6424, 7252, 7253, 7250, 6717, 
    6719, 6718, 7251, 4614, 3869, 1772
  )

Query time 0.00013

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}