Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '58ba3de26dc99d50c0599b48e597f63f7dc1ddc287c4fe24a30c34625810f43f' 
  AND token = 'M6WURyCNyR+QkhRbZsr933OzZForTWnVvEzflWJZru4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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