SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '13f4a7a2fbb66068802ea533c8ddddf05f6d81cd255f00f4801ea16d30c7a546' 
  AND token = 'HlWQsG4GZ6zxwHSYucE2hyn+XIB8qZwWofvN4SvbgVE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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