Sandbox

SELECT 
  1 
FROM 
  tmall_lock_keys 
WHERE 
  key_id = '92e77e5401f97a5515af92f283f50fbab95f504bdf6ac2fc05364bbc325b58d9' 
  AND token = 'XJRZhf2OMhVJO4zDBYJ5CV8YVeZ59AJvx8mze0eQDW0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.01484

JSON explain

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