Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ccafbfbb5fbad1d690790f87b9a533eeebef33d810862051dc1db61a5473978c' 
  AND token = '1i3mO6b5mrYzo79VIBH3UUJqrgKY3vh0aQMlgJPUtaA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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