Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f36593d0bceb470a5deb80f769f781583f6b8ed75e227da4e70be56297c579b' 
  AND token = 'Z0jogAjgjCeHsUjQBYgXk+Wrw+7TczROkosamWIZfW0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}