UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'nTwo2Go2RN9YoNxZ9fh+pSKiqI9lL/2BLLwmVXI2lYg=' 
WHERE 
  key_id = '6e55a5ed9590005316fec26b258a4f4819302956dfecbbdd74728b70bdf7f0ad' 
  AND (
    token = 'nTwo2Go2RN9YoNxZ9fh+pSKiqI9lL/2BLLwmVXI2lYg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )