Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9cce15b95223e7006a37605c64d74438b436dd4a5b52ea157f7732addacbf086' 
  AND token = 'Atxrjmid3s7H/cIVeMv6Lmcwp/ayKPSh2GdYFzs6oYc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}