UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '5ZGcb+e8+QSWGKq/vAYLdEiAHu4miXmHF1OMrfrkTeI=' 
WHERE 
  key_id = '50d276cc853f836177deacae370c4a04c653dd01227a6d740d129750cd7134bb' 
  AND (
    token = '5ZGcb+e8+QSWGKq/vAYLdEiAHu4miXmHF1OMrfrkTeI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )