Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd0cbe44fd682846da00c93d48a7e15f72c6737a6cbc6671fd83ed44403d0c41f' 
  AND token = 'rgs7nae5iATwVO9M3bwMAxEFt4S83KNwFskD1cXUwx0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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