Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd2efe07ff0ee41bc7d3849936be977bf19576c41c6dbd377da36d6cca8f32bf8' 
  AND token = 'V8WAfUHvSm9A08r0ig/nSUdIl7vB1GmEas5HtjPncuw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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