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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '79d1b82e54e60aba6c975c293f81aff30716795cf84cc0488746d073c066fefd' 
  AND token = 'aO9EkmCj+G401X9f3rtll9qREixgWE4+BrKLLX2g6VU=' 
  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"
    }
  }
}