Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e10565ffca6613c25216b27c19af0c7bdf860e2b91d1d3c4720522f2cb4906f6' 
  AND token = 'tpLZwE8TdqVJk79PfLsvJIQ+8y7Sk30ZI1gUBeynI9c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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