SELECT 
  * 
FROM 
  cscart_product_options_exceptions 
WHERE 
  product_id = 61429 
ORDER BY 
  exception_id

Query time 0.00025

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_product_options_exceptions",
      "access_type": "ref",
      "possible_keys": ["product"],
      "key": "product",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "ref": ["const"],
      "rows": 2,
      "filtered": 100,
      "attached_condition": "cscart_product_options_exceptions.product_id <=> 61429"
    }
  }
}

Result

exception_id product_id combination
52045 61429 a:11:{i:23039;s:2:"-1";i:23052;s:2:"-1";i:23053;s:6:"230348";i:22224;s:6:"219068";i:22971;s:2:"-1";i:23015;s:2:"-1";i:23016;s:2:"-1";i:23018;s:2:"-1";i:23019;s:2:"-1";i:23020;s:2:"-1";i:21941;s:2:"-1";}
52046 61429 a:11:{i:23039;s:2:"-1";i:23052;s:2:"-1";i:23053;s:6:"230348";i:22224;s:6:"219069";i:22971;s:2:"-1";i:23015;s:2:"-1";i:23016;s:2:"-1";i:23018;s:2:"-1";i:23019;s:2:"-1";i:23020;s:2:"-1";i:21941;s:2:"-1";}