Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'a11295e411add1c92369ae1a3817ed5971fa1dc4ef05d6d53c252f9dbe74300e' 
  AND token = 'm3g5QK+KgoTfJedbVa1nkzSp/AuZHTFByXIe0QoTaEo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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