Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a380895e2d93df3b079c56ac3bf1f17881e94c5ae80a88f70bf8ef9d11c69591' 
  AND token = '5uK/p6Gzxi/zn/D3IY+/0IH87clcU9UYf3HkxjbA3YA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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