Expired Powder Formula

Chelsea • FTM to a beautiful Baby Girl born 12/4/18

So my lovely fiancé went grocery shopping today and came home ecstatic bc he got some Enfamil powdered formula 70% off retail price... I was proud of him until I saw its use by date was 5 days ago. It’s unopened, in an airtight bag with no holes or tears. I’m reading that of formula is unopened it can be good for 1 year past the use by date but I’m not sure. Should I just throw it away?