Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22deacaae55d8c68f9180b31751ae8e88508f020ae989b86e535911b842d88bf' 
  AND token = 'r7sSG0qR1+TJg8CWinrGLJDZLyvF9aW308CW+YArsYY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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