Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96dd2fc356d96395d793e3bdf5a996070f72a32a58432873c4119cfb6dad1fce' 
  AND token = '7dsg/MsWJ8GwrGPaiQXKe5QWkJhnAbLwPaTZcv1j6cs=' 
  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"
    }
  }
}