UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'D18ny0/+TngNtfeQdLavcfilxZKYkO1di1L6VwuyJ/8=' 
WHERE 
  key_id = '232bc9d4a973433b9317c5da18695eb0380907c3e2e87d95066d7bc3c5b08770' 
  AND (
    token = 'D18ny0/+TngNtfeQdLavcfilxZKYkO1di1L6VwuyJ/8=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )