Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '387dc714cb06c7593dba66f12f489bca1398a415ef2a4905b6fb5d42c7071165' 
  AND token = 'lRPnBs4Ba9khlgRDAKMpe3QfIz9w0Oz0JK71HcMj64U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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