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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ee551395212bc11d20eedd475e2a49161405a3decf42d7b79afe2176dc0ced9d' 
  AND token = 'mT5FDRlUjJ7aPOR6aivAad+7BhZUxC/u9UsmsHxEZZE=' 
  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"
    }
  }
}