Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fe3c93cae9c9f869b9cdafc2640e93d32302698182b18826e00b3c5dd3f12881' 
  AND token = 'g36OiS+7oR74S0+lc5T3W4gugiF4SeoixHrxuzAvFZA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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