Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'af96e9a89bb7c5b43008dcac197427f53b1586fa80474339bde76d1a302ae2db' 
  AND token = 'pR2ZBGSLEhcX225gBBcC3oxbBZHFNm55iOdVg45jSOo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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