Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9dce4008114e948d1592f1a031c0ca47220d73fbc5fbb3b335f2d047ee865ad0' 
  AND token = 'WbbsawUXuNRalmDebfs2LPuTR0DObGggG1dkDU4YR04=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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