Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f7ca7f895f953bdc96b7e87fbe23447eddd07c873529739cc2891f6e692a173a' 
  AND token = 'eQepHxFwd9eIvU/r+JJqXp2H18wn0oIJ+Bga2sCiP40=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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