Hello,
Do you want to retrieve the tokens having bill date as today (today is nothing but the system date) or is it always going to be 15/05/2014? If you want to retrieve tokens for today and assuming that the data type for bill_date column is datetime then you can use following SQL
SELECT * FROM YOUR_TABLE
WHERE CONVERT(DATE, bill_date, 112) = CONVERT(DATE, GETDATE(), 112)
Regards,