Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4150929ac48626ce17f7ef2928df2613297b11c8b8b9ebf41d6d8136a235cb8c' 
  AND token = 'FqDbe72mH29hg+97J6w7gPWNcnO0ql1YHjZskCWEN4A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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