SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fea25e3446ef7f387948a07ac8906147c164569c9cf32dcc9e8d39f68dde68bf' 
  AND token = 's3wbI+ZQQ3NW+C3K9ZjgS+FPExeUfHR0YVnQh59KglA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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