Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'f5a240a9003d49fccaa432df905e14e99ecd199c92e6b468c3c6f6b0c34964c9' 
  AND token = 'HBSUJ1DwXIO7Om5JrnXiSkpOztfSKGyQxsyM39LMEGU=' 
  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"
    }
  }
}