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SELECT 
  1 
FROM 
  tmall_lock_keys 
WHERE 
  key_id = '07aa43d4939a7641046309a9c1aa70855ae0d3bac0a69289c17f8d7c6e99e319' 
  AND token = 'yzhtlVTzgXWc7S1lO1tLkN5BkBDiETL/2vUOyEkAvPc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00793

JSON explain

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