Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e0cfdc7fde84b137ae32afe696dbb1f61e97a78cffaf7de207726cd9d40e2f2' 
  AND token = 'LmJQI9armdImQ1MJBiXyfELRVlgN3dr/tXgqQsjdspE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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