Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e13182849a3342385c6c3b5918d9b88dfcc3784cd421998d2d68bb49560b4c7d' 
  AND token = '4JYAKk5AnmatIf44o1bwi1jPq6ebcz8dkKOwlqsyAv0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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