Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '02459f029417966404db9496ab11a211e59cae2d5a88d7ead08b91a40ac990a7' 
  AND token = '9sKzs5J1uAlUKeI0m4cPkHQ7WuNDX42xZ7UlZxkpqJA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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