Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0be1e0670138a4235ab6011cdb840109021cf7e028c3ce507e49565f28539946' 
  AND token = 'gfnsY6DT+Whr5wPWVJMfyY4d0pkkC/dTt+Oig1tZLAk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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