Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5bb3b2061f4933b5885d65cb252ceff442ce40fbaf702740f4c93ed41af1958e' 
  AND token = 'snlVlqbEXD0e11eEFfhCA0bll1/irQBqBbD4KGZSAd4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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