Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65511d802290fc374cabacb4f33e9057d4ab1887797bcdbecedc84badf39a7ae' 
  AND token = 'xuxpg34KNhX6tyrneat91zZex6d+oXacjb0HFERTVdk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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