Looks fine to me.
I just did a full timing set, and a new head and gasket back in August of this year on my 22RE. I used the Cloyes Heavy Duty set with the driver side steel backed guide. My timing cover was chain grooved up pretty good, so I replaced it with a $35 Enginetech.
If the harmonic balancer has a groove in it, and I suspect it will with that many miles then a Toyota 90311-45014 Type-T Timing Cover oil seal will fix it right up. It's thinner than the original, and the seal will ride in a different spot. Drive the seal all the way home in the oil pump while the pump is on the bench.
If I had the money at the time, I would have converted mine to double roller, but that requires a different timing cover, and a notch has to be cut on the business side of the valve cover.