Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e68d9412119316488cc395428b336d1b38a0ecb1f89568914859aa76047a090c' 
  AND token = 'fnjOdVYdK0KYLgdirHLLyNl8JQrTErOPqtX2g7baUKQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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