Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce6be642b3873f08cc578b1fbf416847dbe84ec020879e4c4408d102da6f03ce' 
  AND token = 'SWai3EoRIePhkkYgW+x3N7B74HMMloJ/NMTH3U5IN4M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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