Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ba3e0e82c74ab1dd3a417a4818585b5fc673d5fa663a151fff012db9a9c0384' 
  AND token = 'gGxpPoUwuu5T8wEn1zHgFo9nTJcZOW3TX7Nqbon4DMQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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