INSERT INTO cscart_lock_keys (key_id, token, expiry_at) 
VALUES 
  (
    '8721ef5a1d6104d2a92f7ed9765985ae404fec017997701e2e1f044b0ee7addd', 
    '8Ddlq9JsigQqZJQkcs78967drCWKpjdnwEyM//W7jkA=', 
    UNIX_TIMESTAMP(NOW()) + 300
  )

Query time 0.00040

Result

int(1)