Buying an extended warranty/service contract at the time of purchasing a new vehicle is not a good decision.
It is prudent to wait until your manufacturers warranty is about to expire. Then you can make an educated decision regarding the benefits based upon the repair history of your vehicle under warranty and the incidence of problems posted within forums like this one.
The KIA electronics warranty is 36/36,000. The bumper to bumper is 60/60,000 and the drive-train is 120/100,000.
Too many things can happen during that time. You may die, wreck your vehicle, find something newer and nicer to change into, grow to hate the car, you might have no issues at all and determine the car is reliable, and parts prices will decline due to improved supply of both new and used parts.
It is illogical to pay for something you won’t get any benefit from for many months/miles.