UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'md1H/I6XC29XKU2geroJLIkbK6VIz9ZvCh+/LUJUqeg=' 
WHERE 
  key_id = '500f4ab47b48a96db1331c54a964337f65a008f50df6a27122bfb085814bc794' 
  AND (
    token = 'md1H/I6XC29XKU2geroJLIkbK6VIz9ZvCh+/LUJUqeg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )