Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62f11db39dc1dfd610ef6ddd5e6a9dea7b0a459d8eff02abe78f252d98874972' 
  AND token = 'na+r/DY6/8FEDjhpTbLiqLFeFedrwMFHuug8XBXbJO4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}