UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'kPRQowddAflRc+jTkmem08dCOmQEui8TW9Ja95kZmHM=' 
WHERE 
  key_id = '355791c1b954f82a9d59710023fe3f53a40ab039d9bf4c013c6a639d73fb7441' 
  AND (
    token = 'kPRQowddAflRc+jTkmem08dCOmQEui8TW9Ja95kZmHM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )