Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '1161155085010a21ab446c3946dd053302a7904a728f0fece33cea8a9b2f4742' 
  AND token = 'HQcASBLuN03cizsIf4nwyzknjIUpEkrVZYI1WamwBQM=' 
  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"
    }
  }
}