Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea2f713dc630c5a123233fe0850226d547631f89781f234cb09c73268e40ad22' 
  AND token = '7YxZpQXpnisDdBs6I1KhX+YVk5XAU3PiWTeFLOlZcW0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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