Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '85024c4fd30ef786b4f2b2946575271875fda0633499a6a3916f7d3674b25067' 
  AND token = 'w7DMHUUdMTgjDawfnKx30C3EZxbdI8Z09TgkCBkObtg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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