Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70f8d3d2f272e17d90e057fe35cfa250a1da5137d03c5cbf3f1e98805964da41' 
  AND token = 'B7B0RWOjfhLYUlTHVLFGu60A/7tes9t1mgrI9+Esebs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00149

JSON explain

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