UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '4UOyQLFvcE20eP5bWTFRiNg1oIN9sVaEeWr4n8gz3qA=' 
WHERE 
  key_id = '18a285464c239af1925752885c36bd21db0a50cd76782a69811db1c7890d0e00' 
  AND (
    token = '4UOyQLFvcE20eP5bWTFRiNg1oIN9sVaEeWr4n8gz3qA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )