It's not actually Spanish (the ending /ck/ is more english) but it's used because it's already an international word for the action of tapping a button whether real or virtual or the confirmation of that touch. It is clearly an onomatopoeia of the mechanism in mechanical pushbuttons for electricity.
CLICK from the English TO CLICK, make a short and high-pitched sound or make something do it. 1 . Emotionally attunement to another person. 2 . Press a key or a digital window.
CLICK. It is an Anglicism. It is used in the cybernetics and world of computers, computers, cell phones, tablets and mobiles. It means typing or clicking on a certain place on the screen.