Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19b69d2c5844312410e8cd93c2c234f54821e36c7739f48c978fdbe45d77d898' 
  AND token = 'M8w2ufaqlzErN/rLwcICsU9+XGtK8ETW0WAvfovPrYI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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