Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e287361db6178b9ede84c65e5df79d26fa516fef43943e6663d46a51af765fb' 
  AND token = 'pYqCp8YoufF+X6eN4UvS/LzBBE0mDE1tt5GRN9AKEPA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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