UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Q4cIuLkCXjSfbBB+0YLbrioG4dQphs0zE8l4e1GuhWM=' 
WHERE 
  key_id = '55f879072832c104550566e360408f5294715bbe83601858fb8684d87720904d' 
  AND (
    token = 'Q4cIuLkCXjSfbBB+0YLbrioG4dQphs0zE8l4e1GuhWM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )