Keyboards I've bought new have tended to be indestructible. I remember bringing my DX-7 through New York City subways on a handcart getting to gigs. (With amps, harp, guitar, etc., all strapped to the cart.) Never had a problem. My PAIA String Ensemble (hand built) also wouldn't die. Used keyboards, on the other hand, may be more "interesting".
On the other hand, my father's PolyMoog seemed to always have problems.
So I'd say it depends on the keyboard. Some are more sensitive than others.