INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '338a7a4a500c60d5b68932ec371eba8b9a19281a05f710c3d6814e6711817ed5', 
    'sKPaJFeUmgEmCUR6S+0QTstkxFMzmoQoqImPAGezyWs=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00033

Result

int(1)