Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '49d80743b8c232e826ba1087d26e8710972d0e7ddb6ed2045d14d08cbd4044ca' 
  AND token = 'j1qcorAccbLTxnnY8r5tzfy8q+JS/FCPgD28fKokLr4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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