Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f934d5ed0de20028c70697d303dd0cfec1238325ee6903c7416c5133e48d03f3' 
  AND token = 'sYR8HRgWitZjUkAq3u7Xy/6024t4d4ZovhX4yIy6PRw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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