Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04ddf370ee733ebda7a7d44cd62790bd933ba8b30e418587959513b88ec60ff3' 
  AND token = 'vUqtZhGo/WZWl1eHgL6vsSvy2Nxk7uxMrEKEkd4z930=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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