Hi,
"Win SvrSTD Core Lic SAPk OLV 2 Lic D3Y AqY1 AP Core Lic"
Where did you get this license details? From Microsoft official website or other?
It's naming format is a little different from what we have seen for ESU product key.
We should to buy the following product key in Volume Licensing Service Center:
Windows Server 2008 R2 SP1 Extended Security Updates 2020
Windows Server 2008 R2 SP1 Extended Security Updates 2021
Windows Server 2008 R2 SP1 Extended Security Updates 2022
And I find a capture on link Obtaining Extended Security Updates for eligible Windows devices (It shows Windows 7 ESU key). As we have not privilege for this website, so we can't create screen shot for you.
Bests,