Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '30383f96f057c4d26d4c40470d8bfecd5db6edc009c072b5ce1b50ea25ed85f2' 
  AND token = 'ww39epTVZpa4dE9/i002Ta/uK/gdHVJdJEl8TRphtOg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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