SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72016d58d299562c45210a2ed2ff6711fcbd13f7b477ae31fcfb364ab54d7b54' 
  AND token = 'ZMuqocsVM+JLwZPSgR/0yXyAyE8KQhtEDmtTizLIpC4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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