Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'd090ebae49f3c432264e1724a3618b4d0d09aa959bc8c7318ed252734096a6d4' 
  AND token = 'rOU8mU9BsvZaXH2QiJSRhKgWOtHJQUv3r2dOPRW8nqQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00011

JSON explain

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