Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '9829de2da3bbab5db7f710b18d9b1c604c9100a9637a8e9a5d693461bde49f20' 
  AND token = 'aNEmuXjMaLbnvaqDHgetOvKlI5LZIYrKok7i2pRckQM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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