Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3b9756d49e1d4f1debf53135633f4ca8693b9ef798de3bc34688a98a6e48979d' 
  AND token = 'F+bZooVuKKKk+iUfytUk2ge9NilcqZNGjlKFBAYuyOM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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