Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f98b38bb6ea2f3b79f7b63a17c966198c4f57249e0b4f1398892fab5b053aa8' 
  AND token = '14JPD86u4KKGbtEK4PeNOwq/C70r8lDJPDo64NYYnAE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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