Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70730d2215c9568113e8eb776ceacf1490e5a9a20a5f03b00aa76986712f313f' 
  AND token = 'LwJL1yoqYSqZk7JOFJAvo4s3EZCBje1d63LsAzyCtUY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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