Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '826aa67d94b8f08e7fae74f4710883a8b8863873023a2bd85c5ab5c441352726' 
  AND token = 'rFwuj4H6RDm9ljJILS1mDwevlj76YobV6zZ8wT9gNV4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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