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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '3a13b39af889f5abb746e82a4b1a2bbc65f8ab2e137a7ca84ac9c8c06eccbf11' 
  AND token = 'SvfkXK3a3jZ8v5MtAwJKXg2jBM33gsq4kDYVD0aKIeU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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