Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e4c23b803d959a13cee3e03dbd36cdec52b8fdda14bb45ef0a2a93f2fcbf564' 
  AND token = 'aieaHAVcOqUCK7jniavSAd6Cy0jO7v7ddvpE9gHJB2w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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