Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'e3e25b6af46e1e7fc8fa057911471e16c7b7021b0621410971ca6dd5b6fdbce7' 
  AND token = 'Em/dD1joWO5VFFLiOlww6q/K2kX613Cxgk8LRZcb4ts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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