Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd01cd0e881308299bbd68eff0482525fe24886e80a0e9dba3e299dacd20b7411' 
  AND token = '/Hextp4t3UlePx+BbNa4GmQHpC12qhkrWnZY6gUW3pY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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