Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b07fc20ab036444e4b0c35f9681b9704728f42c81cc504fae8ef192208eeca3' 
  AND token = 'gQylfAJSLZ67CERUdedIDKf/QRCBUo8c9IFSi4iugew=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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