Couple of thoughts...your token is referring to a field in the header. If this is okay, great, otherwise if it's a request detail token you need it to be REQD.P.*
Also just to be safe I would use
to make sure you always have a valid sql statement:
SELECT CASE WHEN nvl('[REQ.P.P_OVERALL_TOTAL]',0) < 250000 Then 'YES' ELSE 'NO' END From Dual
Like Alex mentioned, you also want to make sure the sql returns a value that is one of the values for the CODE of the execution's validation values and it only needs to return one "field".
Optionally, you could use a hidden field and request type rules to populate it with a Yes or No value based on your two input fields, and just use a simple "token evaluation" execution to transition based on that field's value.