Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3ab50d8b796811f8d647e950e48b7844546a998de2364041c33c64c7bea63207' 
  AND token = 'MVGhlFblwqgYjDGw4c5xSj6p681HdeiXIeLhJkvocb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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