Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e92ac62997ece86d7bc5f4f6607bf9e968ad3ce7e05f62010eed763a785d14da' 
  AND token = 'o2tXKfzay81WbhFqEuNbbPzyA9dkLJO+MqFVgn8fk74=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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