Unfortunately we do not have support for exporting projects generated from our toolbox to Keil5 uVision 5 IDE - if you want to bring it there, you'll have to manually set it up (copy the files would be easy, but you'll also have to set the linker files to be used, etc.). The only IDE that we export to is S32Design Studio - for that you'll do a simple import and you'll have everything set-up.
The only suggestion I have, in addition to what constantinrazvan.chivu recommended to you, is once you have imported the code in S32DS, to export it to be used for Keil. Maybe this link can help you Using Keil μVision 5 with Processor Expert | MCU on Eclipse
Hope this helps,