Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d49a4e89b0fb934993f91c6ac0a89eabdcd30b9796f1d06ca866a369badbbcb' 
  AND token = 'VPlqUw0FVEUoqI2RPToK5y08bYLrST90G+Nmc/UU8Rc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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