If the guy has AK and is solid, he'll raise you on the flop (or hell, he would've raised preflop). KQ could raise preflop, would very likely raise you on the flop. KJ is probably the only kicker that beats you that could likely just call you down.

But that's why you bet small on the flop. You test the waters, inviting a reraise if you're beat, and don't risk much if you are. You risk getting outdrawn on the turn, but so what? Again you have very little invested in the hand, and if the draw misses, you can bet more now.