Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '015a11300f180365eda481ea811d6889638638d1f200ff9be6c0309d8fa537e6' 
  AND token = 'AWkC5QtBIUiIidb+dt57L/Bcoa0ETCAPGS6kFvS3yZA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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