Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d0617c06d79f6c7265c89bbfafb93fb3aed48820638acf0963e211e9d56f195' 
  AND token = '9x3Dw+eYyNHPybuDecMjT3SMjpQt02D019jGqNKTshU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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