Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '01a617a7b21146f69e6886520847c58a757df892cf1c15de6581af5358469279' 
  AND token = 'hJFdOiTc5HhbXPNcwEU6GTXULAhPj9Hq+J2FcddDayQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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