Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '87d4c80a65fb43eaa9daa0d8233fd3ec7346579b3ad8887d5a8e796be1fa2479' 
  AND token = 'jrMosHIuuk7ORwobDKGGMA/POJQ6SqMNP/DIFSZD9yw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}