Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '75fc42d30a28b027d5cc078264b8a3bbb2f651fc135035dee522de4f9ad0024b' 
  AND token = 'iOOCFI+nwdn/LYwEbNu65mqFYloledDQl2Ewn2SsntI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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