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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '33774d18b06d875786fa7a107b00f7cc6ac1b4677a4ac274c96992c8a77a081f' 
  AND token = 'LQOh/Tp0wQFDRI6X++7DCXKvTKRh0C3hLQ6ssCLWmCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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