Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8b9b515e296cf001d0bd1a04517becccf3b45352f09319c4726f8c6162637207' 
  AND token = '7LH+lV1WZnnS5hl46yOzNict1hkw5Ne/bAugdA0+fZo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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