The last time that the president and the vice president of the United States were both older than Donald Trump was the morning of January 20, 1989. And I don't mean older than Trump is now, I mean older than Trump was then. (The same is true of Joe Biden.)

They're both older than these presidents and vice presidents:
Dan Quayle
Bill Clinton
Al Gore
George H. W. Bush
Barack Obama
Mike Pence
Kamala Harris

There have not been any presidents or vice presidents between them in age.