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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '233b06fded3c25db0775ee619ff22b4d6e9ec52b2e541634a5393f1ae465fa88' 
  AND token = 'yfuVF8mQ2NEtWG0hl6MX94hWgkb+zum25g5HcZTXyqM=' 
  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"
    }
  }
}