Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ef84c2a5a2bab98922b005f5bc4d7f2d76f968130ef9245a7b19990502c93a85' 
  AND token = 'WXKVM5jddRETEOFSJY6Qv6sv7eIP9il1+1w/J061kEU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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