Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4258e8ac830e5e18d3a1d69ef890b00a40df1a25247ed682886c6b28e3965fc3' 
  AND token = 'BBA8Nu78jkhj3P4xKWDu/dgc0trg0udhQszwRm7F55A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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