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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 (
    8338, 8339, 8346, 8341, 8462, 8334, 8335, 
    8355, 8342, 8340, 8360, 8064, 8473, 
    8332, 8267, 8318, 8336, 8337, 8243, 
    8257, 8381, 8315, 8265, 8313, 8063, 
    8358, 8127
  )

Query time 0.00051

JSON explain

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