Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e2f5847d227b3143ba9dc341ac966658fff411276ed07c1b9161a602214d931' 
  AND token = 'NaxCyBzEUan6dUQkSfY8CMFfEWhK85RRVSyq7yUxkBI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}