According the article in the NYT*, "... [Nohl] added that consumers using SIM cards more than three years old should get new cards from their carriers." Elsewhere on the web** he is quoted as saying ""Different shipments of SIM cards either have [the bug] or not," Nohl told Forbes. "It's very random," he said.
So, it seems that there is no way you can tell about any particular card :-(
**http://securitywatch.pcmag.com/mobile-security/313914-encryption-bug-in-sim-card-can-be-used-to-hack-millions-of-phones (quoted from the Forbes article, but I can't get into it)