UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '5ZpFn0YZmtgjA3uJoEDZsKp810NgBN2YsKDPBR+1IPE=' 
WHERE 
  key_id = '4f776e3ad881853d8d08de46d895a9051357914e104665415fd0bafee97a3131' 
  AND (
    token = '5ZpFn0YZmtgjA3uJoEDZsKp810NgBN2YsKDPBR+1IPE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )