UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = 'eRd/g7cnvMflbEhNyPZN7WJheoBconBSl6I41icyHCY=' 
WHERE 
  key_id = '66a9e504c348603441d70e46b678fdc32bc8d282af098a1dd106472f2697640e' 
  AND (
    token = 'eRd/g7cnvMflbEhNyPZN7WJheoBconBSl6I41icyHCY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )