Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '54e2d6adced53e649d7d577bfd5b715788960f0ee6951a7e4b7b8ff212ebd2e8' 
  AND token = 'qi8jtI5TJyRhGaIZlj0agnRS9tLjmER/Ye/IggRa6wA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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