AK = Annoying Kards

[JustPlayingSmart]

Stars 5.50R, beginning of 3rd hour. Blinds 300/600/50

I have 20k and AK in SB. MP (40k) goes to 2400 preflop and CO (44k) calls.

I always push here and I'm running into KK a lot. I hate flat calling here, and I really don't see how I can reraise and fold to a push, so I continue to push. Have I just been getting slightly unlucky lately in that I'm running into hands that crush more often than I should or is there another way I should approach this hand?