Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd41e1440139161c06332e36de83b9827e14f3d8815b394fe313c7bdf062499aa' 
  AND token = 'XzRKNavPrAzYt4zQ8MgVPiDyseN11GLXz7ORdMYDpjs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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