Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59d949602bf29f87125c39211e2bcfcb66ad2394f21ba3ea68aafcf8c57e9479' 
  AND token = 'zsTBcyhFjq7RbADFBcdWi093OI0ZH9HhtVOeTZcLdfU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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