Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '07e800f24ec78ff3a54b00a8c07a2e9bdf2d33d80e5ea7f550b500b138a2d9ad' 
  AND token = '0D306zIGHmz36NL4yHOBdtXsskjDkfJRcywpWzJbHeM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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