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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 (
    5002, 5003, 5004, 5005, 5006, 5007, 5008, 
    5009, 5010, 5011, 5013, 5014, 5015, 
    5016, 5017, 5018, 5019, 5020, 5021, 
    5023, 5024, 5025, 5026, 5027, 5028, 
    5029, 5030
  )

Query time 0.00031

JSON explain

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