SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd8bf25a74e671d7c5fd08e8a2223b95a148195cc5ca8b12997b36765821e8f6f' 
  AND token = 'ggFU/qLn0XIrCYtuk+cL7R3bB2wwRcnZ6nLizUDjXRo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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