Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2efef5dd735ac1729bbf46fd7a19701889e8a24555e1112c88c035b4997533d8' 
  AND token = 'tem0bxWgQgaN0A+HuvgI3uozoFl4+dkuSEF/+Ljokx4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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