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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'cbb266b22321ce751b0735c7962818fd228d887302d6f2d5943d9675ca0bd611' 
  AND token = 'kP8C1+lz32s/QwMDk9IR3Sg8a/ALs5LrpiyYbMteAg0=' 
  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"
    }
  }
}