Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01cb49ff1deebe9f0e42e4be8134bceeb940b2d37506d1093fb3b2ca90c1586e' 
  AND token = 'yXgN1v9yaAeRUg896BU2sHIin7cV2taSBZfjdKk+wvY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00056

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}