Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9fc7a9461570bcf7e666b426ec4f31b02bed83fc32600b3e1119c71cdf4605cc' 
  AND token = '7wVjv5JMObcD9MZ83HuKaZPZocJlsnJ4FRuaFZhvWnA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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