UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'r+20XYFsBzkXh3UqwsS4VHLaGEiCIaiKz2eepcxIXs4=' 
WHERE 
  key_id = 'eabc832a108df2b0a96edfc659953234642fb1ec8609c3f0ffc334e898488038' 
  AND (
    token = 'r+20XYFsBzkXh3UqwsS4VHLaGEiCIaiKz2eepcxIXs4=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )