Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '779679088c0aa91b91dcdbe5c567969cc9c7e214cef1af8732868b4d54af65eb' 
  AND token = 'NC7XCadDhgWDn0wKMPeO3+2FxsS8JS9rF4fQBSKSHsA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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