Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17058985204458ff51bac18f2881303607a3c5c06fe1fece3b99639b1a426c91' 
  AND token = 'NzACuUpB+Db3K8NoMZKk/RmNjxMld+xDdl2vaiMZ/UQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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