Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1946cdba102b9e56a9b16696754e57a1f111461fa7b3660343f640c326dd317e' 
  AND token = 'XQdknRv5leD3taZ2Sf7h7KIi1bAxPIFqC56uHVECs8A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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