Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88dde696fee16f343465d5abaa945617750b066813ad3e7850c83a8fa03eca2b' 
  AND token = 'ZmzE55VcEjxA2dzwcKJUlgJ6GcD63AHIOboNnGNZ3uQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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