SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '0592478ddbf30462033cb28f2ef64dcd74bebde06eab1f879b21984eb7c2fbda' 
  AND token = 'eywO/OaR7Z9+r+Hl+uwBkHyH+6wjj+yB5T+mAsYFzoY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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