Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6bd17afebf5ec77dab66929631bd1c089312d3160898222202f1461485ad8cbf' 
  AND token = '2rq8ELoIp3vaTYz2/aDWcLKiQFDarC0n4oSZYVdymxc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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