Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '99a9040f6af1427c9b6ac6c74ef8f7ed861c7adba1292cb10b13a30efba10c5d' 
  AND token = '+A2Y4ApWNVf5IvxHZf1SVNGE4bKDuj4xFhKCEyYA/SU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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