It slows down over 40. There aren't as many openings that need what you have, but they still exist. It takes time to find them, though.

I start contacting headhunters (I keep a file of ones I think are decent, since the day will come when I'll need them). I don't know what other things to tell you to try - I haven't needed/wanted a new job in 8 years. (I was 47 then.)