Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd35805598007117465a31bc4ad4417af77490488db7dd8afbfba4b5cda76143f' 
  AND token = 'q96bdgEdkfkvIofXqtd5iM7wqFowOA47RAxnnxo64po=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00057

JSON explain

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