Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec60ee88426feceb99defb0312b55d6aa162aaa1646d3b39b0b4f3893fd24ced' 
  AND token = 'Q+F2/dENKLZumB4Dho971LBkGu3l/91VvSNhFhZfeG8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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