Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13461a4db16c02f5ca7d6f0728efe317c72df1a82612ccaa2a43016902a5a59f' 
  AND token = 'bKC7Qa3fTPdLisVGRZmfS2ez6c784iwfPFjkXdLDkzM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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