Issue #19 has scenes set in 2231 and 2232 during Scotty's childhood.What about a prime universe version of Keenser?
The flashbacks to Keenser's youth on his homeworld in Star Trek Ongoing #14 are set three years before Kirk's birth, meaning they actually take place in the Prime Universe. I'm pretty sure those scenes are the only Prime Universe content in Ongoing.
Issue #33 "Lost Apollo, Part 1" has scenes set in 1970.