SELECT 
  * 
FROM 
  cscart_product_options_exceptions 
WHERE 
  product_id = 530 
ORDER BY 
  exception_id

Query time 0.00027

Explain
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE cscart_product_options_exceptions ref product product 3 const 7 Using where; Using filesort

Result

exception_id product_id combination
4295 530 a:3:{i:1362;s:5:"24273";i:757;s:5:"24271";i:758;s:5:"16347";}
4296 530 a:3:{i:1362;s:5:"24273";i:757;s:5:"24270";i:758;s:5:"16347";}
4297 530 a:3:{i:1362;s:5:"24272";i:757;s:5:"24271";i:758;s:5:"16346";}
4298 530 a:3:{i:1362;s:5:"24272";i:757;s:5:"24270";i:758;s:5:"16346";}
4299 530 a:3:{i:1362;s:5:"24272";i:757;s:2:"-1";i:758;s:5:"16347";}
4300 530 a:3:{i:1362;s:5:"24272";i:757;s:5:"24270";i:758;s:5:"16348";}
4301 530 a:3:{i:1362;s:5:"24272";i:757;s:5:"24271";i:758;s:5:"16348";}