Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '09ccd6bc5cee4f5d21c4efb3d5e901e83c9a5820637b5e0373ec00641a768118' 
  AND token = 'aWF7br8IgeAyNEdQ29kwJUqyB2zVRUbiuh/RXOZbEJo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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