Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6007a4a0fe6152896abec54a0f00db3a077a0a6c9f124876297aea15e599c879' 
  AND token = 'F3BSNeHQdjIa8sG4iOx+StyDx4h5nVegUOMJ33n4fwk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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