Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7adb670f86129ec253b1a051cd86c24418e5caae81615ff13402cde2bf0ed1bf' 
  AND token = 'ZLNcUC9KkKXJ2s/7h6XNvRw6SBHYeV7eo4YcZDU3ocw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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