Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e3a28f61922e55de9d414dbcacaf0bf7723ff341e5a3cd32b971aa82edc1616d' 
  AND token = 'xxGQtu2PxGSPyh+7SI+PyvDp6+L2nz6K/JLVcU7CeUM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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