Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19d947055f251c09233aeab33dde87f74e8f07062f3a69f808ad9a9469f7d3b6' 
  AND token = '9DKlYp+WYEHdSXlvdkmIGb4auXJIPJTZiKfP2wISklQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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