Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '23f59b33b229ed9ad1d0bac3a9fa1104345e66f23b2728b4ae69d0010ba4f48a' 
  AND token = 'eNovCg0Yh19Vi8AonjnTd/8zlogcHBxvcTUMGfGTjjE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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