SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0ebd7fb3fa23d6797969c25890a6b9743b2746cfff0b5d1a33bb6b9b1dc190ac' 
  AND token = 'htGacH7pXl3dgvmOKVCXFf1ITBQbeHdhYKbz8VdZj5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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