INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '839849e87e343a6f3ba8195d41241f8a50d33d8f66e1b4d92a5c51b55d949039', 
    'nTpWIU2q8+2swIUVbhEEvGTfvd1tClN1DK52CB9n4TI=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00018

Result

int(1)