SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33ad1c07d26b3cdab40a1f5484bc89b2f13447fd6498881e4ddd2190479e85b5' 
  AND token = 'uMpOROwDkU1BxngDdujkR21aWS+CKx7jhRg/XwvtXRg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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