Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11fc954c93195d0241423dd72723acfb6c48e40e91a10ad60d5cbbae6c095891' 
  AND token = 'pJvO/IZ/gyawhgMWT2QUlc2QCz3iyguUTcVqfOJVA2k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}