Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39bf0d7509f62476484ef55767193a3ab109ba31a3d1f9f6e1f312637f7e4f35' 
  AND token = 'Dgh+PYXTt7EaafeU4pmuWt8Ome9Dx+IhwaVVEzsD2AE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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