Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9fedc5a1b6366fbaf90bdf1e893890cf73b9eaa848ded8e356e4004731dc2458' 
  AND token = 'lCsdBTlIO74q7jS/nUCHs/pLqae8QKtRaGyID/+K160=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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