Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1a38a588d644878a8148a972f833d671bbfe81263b4eb0ea90e7cfa6fb6c7fb1' 
  AND token = 'L50woo9oXLqOkaqKE0Lx+6a21Gloh4XEKu8+5t2B22s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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