Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '1a0757d61df0cecf7191db7b00cd21ac5c63648bf00148bf165d835414870116' 
  AND token = 'cjil+F4mtQbmWulPuz64NzkIK6Lf6An4Ouh5j5Gqv2c=' 
  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"
    }
  }
}