Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93e264f3d2018c9cf66b89139861ec5615f0c4d4a242b7e5c229720bdaccc971' 
  AND token = 'SGNnDAVVFklDgauOi/Wme7VRkwY9eaUFkH1AZDqY2qU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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