Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a0465fb808d9cffe7b8a763959a46574d87253804852007102787f43d0eb6983' 
  AND token = 'A8s1kHwl3Zc9qE9j5Y1/t5dbK1u/cu0Q3kqrwk5Elb4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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