Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74ac933a2ac28c700b366f29cd3c86423bb448f5af0fbbc265df80d8f3010184' 
  AND token = 'SAyc+lJScd8FbpJXFdUUgZZqPvERqNaIhPFettNP89A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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