Full disclaimer per the owners manual: "STOP using this car seat and throw it away 7 years after" the date of manufacture. Look for date of manufacture label on back of the car seat
One of the bases being included is expired and only is being included to be used at a trade-in event at like a Target or similar store offering discounts on new baby item with the trade-in of your old equipment.
The other base and carseat, according to the user manual, are set to expire 7 years after the date of manufacture of January 15th 2013 so it will expire January 15th 2020. After this date the carseat should be thrown out. Common sense would suggest that the carseat could still be used in the stroller after that date but you should contact the manufacturer and ask the question and not assume this.