Sandbox

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 (
    1295, 3576, 3585, 3584, 3575, 7601, 7602, 
    6709, 3146, 3752, 3145, 5096, 5095, 
    3147, 5094, 5097, 7732, 1522, 1683, 
    1685, 1047, 2447, 508, 3455
  )

Query time 0.00048

JSON explain

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