Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1360aee5938e0a884ddf9245193552386617493200c354f7647d9ef8f982f0c7' 
  AND token = 'ZmfImDBwJxD+UcgGRQH6anMqi5XZIjk5395GSL0fOdo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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