Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0efa7d9a42fdc6a8501445190125801461c042ed5ebc414f99162087d8a03086' 
  AND token = 'MEpzUmuLlB38tkStV2d/aAVXef39xP/2WWACHgbHqfk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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