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SELECT 
  1 
FROM 
  tmall_lock_keys 
WHERE 
  key_id = '0652df77edb0125dc8ec88a768ee385c0ea5d18655a569f73aed6c8a647b3bfe' 
  AND token = 'LQa2CKOfomv0/SxD+rOIkIie6eyyFROkiIOvdbvxjW4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00850

JSON explain

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