UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = '2NY5xtOfn4WJry8C4mwmIxCYjois8ME77tHivjVBowo=' 
WHERE 
  key_id = '4d959e005ae9ba1efe1ad01d126fff6507c4c09a82e59da07501ac530bd41fc9' 
  AND (
    token = '2NY5xtOfn4WJry8C4mwmIxCYjois8ME77tHivjVBowo=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )