Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a06841f5fdeae56d4ba91fd29d3b5f0f9effde58c8324d85991d8df2b37e2add' 
  AND token = '8uvp7InP5SeBUX4b/DCDngfgO2TTknnuyhofgIiOKCg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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