Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f7741f46da9c8ff939c28185e5167d7937cab4cf6485f1d5cf0813659ff7c6a9' 
  AND token = 'DO67Mt9/O0nHtIUhv10jb2rxyheiW9z+PIUtkOGScI4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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