Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '34857b3d5b2bfacf7f342f6e173901dc822f4a0a7d21ca685c8653bfb19effd7' 
  AND token = 'CWOHaioIPyex3kkzWEvRAjIsWlrAq6KJFrsKy468J38=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00107

JSON explain

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