Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1cad53b0ca18a3e1f1ec816d58f87e74740d3dd206f9ba24cb124bda0e5d1069' 
  AND token = 'htXKxPq+Q0l5IZ3koNSJ3coGfUPdbuzfiyfGtAhCJiY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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