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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'fc03de029df77cf873718a82930a5d130367a16da754129f86aa5d3d5c90001f' 
  AND token = 'nrqb0C8aA8ES3bi6eX501xLis3sENZjJyeNDXe3ZuVk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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