Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fd9011351629ea148f7170034307b60d79f2bdfbabb3b390aa1a5631f955b18e' 
  AND token = '7dCt/SkfWHqv6zD0qFLSaMs3lhVWWMzi58DHJixgGOQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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