UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'C+fNEvjzZBQawwBLbv+SJHjKY7okq5AlnLGDjJHApiA=' 
WHERE 
  key_id = '821850d096fde77f6838ea72e3403ea41cc842cf96660c74d89eca39d51f232d' 
  AND (
    token = 'C+fNEvjzZBQawwBLbv+SJHjKY7okq5AlnLGDjJHApiA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )