UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Vaz/FSRreJkJ/6yjwwxiHSg6oVCacu/MIGCzX/KsRGs=' 
WHERE 
  key_id = '68a051a825244b3bac68800614932229f87c4c3b6b53511c77daa378192c032d' 
  AND (
    token = 'Vaz/FSRreJkJ/6yjwwxiHSg6oVCacu/MIGCzX/KsRGs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )