Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5b70b7f1fb190cf3056cf1ba1993c70001ea26bb0c867275a37753dc286c8c72' 
  AND token = '/PGFkPZmQJP72wpOA/4lJNrpaoqvpZk13rRH08mM4V0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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