Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1767e7ff82ccc59317ce17b0468f71fea9095aaacc311653e94532ca5a31855a' 
  AND token = 'b2MjHv73Ff8PXXaeGxuSywnk+WHWUKkBvXuyrsjFmag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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