Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'e930fa11726f81be14e8e5edf1026e4be4f4c86f5a95ae3d50c3513aae3f4550' 
  AND token = 'xooalURI1BIgUcw1L48oa/TQM1KnTlfI0/BWURrv66Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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