UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '//Y5GryHW4JTYmVeAPV6/kV2vi0FIW3PIakQiHcvaEY=' 
WHERE 
  key_id = '68b34311c8100af88f2f795c3c9653cf23aa5fbdfae132aa1fa3a746bc66de3b' 
  AND (
    token = '//Y5GryHW4JTYmVeAPV6/kV2vi0FIW3PIakQiHcvaEY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )