Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a1ce1d0d6e27766d1ce986bf78bfa57178e8f315f4aacc05da02c60148b30ecb' 
  AND token = 'Isau9mAi5FHY8Hn7AI6A7tj3FSyFhf8q0rxakWJX+rU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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