Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '52e16979af104c69494d5ca518b5d4fe3b93c7d33080145df2118b6d9f938f35' 
  AND token = '237U67r2Ylz3Z5LgGrwQ/7fKK5EwjqH6ig4/7af1crI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00064

JSON explain

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