Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc1b8070955971c8a7d32961c8367454cc6cdf06c93661ceecfe6e8c716da713' 
  AND token = '5IG2ubaEp6Yno16iKD0Px+ljGygYSBkzykdueaOWL3Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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