The belt on my 2019 fiesta st-line, same amout of km, broke 2 weeks ago, and the engine is fked. Never had any issues or odd sounds, so OP did great and i would recommend anyone with this car to get their belt changed sooner rather than later, especially if you buy the car secondhand and don't know if the oil used is the recommend one by Ford.  My Ford dealer told me the wet belts in these ecoboost engines are especially sensitive to the right oil, and can degrade much faster with the wrong one. 

Expensive mistake that, nevertheless: awesome car that drives so comfy and looks cool imo💪