Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b74347a57105f46fb3ba51281f143c4be547b2f49c277dd5140d10522ac3101c' 
  AND token = 'jmLvJz4MJIYISkl4Z5XwV0WLOT6RNhC6WLHAbuZ1a4Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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