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 (
    7056, 7425, 7368, 7068, 7047, 7380, 7061, 
    8423, 7372, 7034, 7046, 7426, 7369, 
    7373, 7275, 7374, 7058, 7445, 7387, 
    7045, 7371, 7392, 8712, 7367, 7284, 
    7393, 7366
  )

Query time 0.00036

JSON explain

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