Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '061a0200ffa616749e86b6b1fdf7e232eed0c6084ee902a13c97a3f593688d42' 
  AND token = 'kbBbQh7UP23PvlssP7SEdrh1/XXncOG5IZxA/lRun70=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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