Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '432040da801533da31c6fbe6a2727ae5aa3dcbf2d9d53b9fb33f85d555335a69' 
  AND token = '/kFjyYG09QV+wDpxa3GS9Ezv0/lJ61aGixg+UivOkAQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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