Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae2f92bdf758d5feaf1db3182753d1121cf2e459a7c283f650628dd0debcfcd8' 
  AND token = '3sCVT3O5IgUbF/pZ3Ygw91LJTASbc4FwRD9PeLfpo8E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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