Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4d838a661ca0e598c45d9e4aed66f97a65a18d360d73e03a5e485eb5da09896a' 
  AND token = 'vGh5XepqoG0j3Ew4YO5sNS+aloXZuX3oaaK74H76aT0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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