Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '14ae49248e7f7d5a9e5545318b9fd4550ee8de533025e9292f649c1c061b5027' 
  AND token = 'RBrgDncbkOP2tak0reDhhicMqpGzJG/GKV3Js4ruH+w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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