Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22d8f7aa0ada13288ac89dea573ce854d9ec549e96c992c9cb341b2b7f96746e' 
  AND token = '2EClgLzfdmCimhTJX+OB+LsRdRR9E91FUZ6DTKkmucA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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