Unable to answer "Are these opening hours still correct?" – Korners’ Kountry Kitchen (Restaurant) – https://osm.org/node/4690415568 via StreetComplete 58.2:

No longer Korners Kountry Kitchen. Now a Mexican restaurant named La Calaca Mexican Bar and Grill. 

Hours are:
Monday - Thursday: 10:30am - 9pm
Friday & Saturday: 10:30am - 10pm
Sunday: 10:30am To 8:30pm