Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e06512ebf80972f9eec373a7b1782ac3016140d68f78f540ea19d836911bc41' 
  AND token = '3LJiK1WcPyaqpMGD8G2K+f9vEEaIF9HZ5eZevQ9wl6M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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