SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '3f33a4e83bb918fa71f8705f8b47b869ab16abeb408102c8e4e5e1eb23509b6e' 
  AND token = 'wIH9vujC/ZR5v73ZeGpcAaiVwsYh89VX3/n9LLyhRPc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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