Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32f66a97056b9838c44e75b526052f9dd750c51e1eaefa0c3e029041dd7e09fa' 
  AND token = 'pDk30gWp1v0OiFNNuTtKo51JSOqm9fMRTbFQBo7FSKc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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