SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'd5882aa05cd92f5e99f55a06bc7994afba83b1f06e19c8c7063e65a6ed7fd9fc' 
  AND token = 'nsV+uL2ZuZuFNKi5KqONMK1K4/bwwUtmiMQpbSCmGcU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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