It seems unlikely for such a hard thing as spontaneous creation of biomachinery from amino-acids happened at the same time for both left-handed and right-handed versions. And once you got machinery that uses, for example, left-handed version, it's pretty much game over for the alternative because life grows, evolves and colonizes at insane rates compared to random chemical processes. So it's very likely that wherever carbon based life exists it's chiral rather than racemic.