Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1272c9cf3f7d9118867d13fdca60cbf0b96cecf7e8750c0a6bf9d94f636da44d' 
  AND token = 'V+4k9jzSrOkce2hjthr3JBhQqoNbeieI1rYftJ8sf7U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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