INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '51ec9a6b1453e896803831555d9a2b70b91bfb15a1b2c301bdd1f73fc49ae6af', 
    'ntzvrXt2AeI+eHd71tT5u5i2b70McEd9dZS8Meo4WQg=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00023

Result

int(1)