Edit: **** I just read where you said you are in the middle east. My situation might not apply, I don't know if it's the same over there. Good luck...
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You keep saying no warranty well I might have some good news for you. I bought a 2013 Optima about a year ago, didn't a warranty and the mileage on the car was over 100k.
While driving to work about 7-8 months ago, the car started going into limp mode. I didn't realize what was happening, I thought the transmission was failing. Took it to a shop, they said they had bad news and good news. Bad news, engine needed to be replaced. Good news was, the nearest Kia dealer was going to do the engine replacement despite the lack of a warranty. It qualified as a recall if I remember correctly.
So I got a brand new engine on the car I just bought last year that had 118k miles when I bought it! Kia might be earning a lifetime customer...
I don't want to make it seem like you are guaranteed to get a replacement engine, it really depends on the dealership near you. But with those low miles on the car, I'd be surprised if they didn't do the replacement honestly.
Good luck man.