Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20d8b79b911abb38f20bd5ab3f471d16a5543b7f1ce55571a329f425d7368825' 
  AND token = 'YjsYmosf22sCqTUSMU/9B4wsgKVR1D1kTknVYrllyMk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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