Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '160afdf1abf77b6d722b4e8e1010c8f6c3065771070aeb9f25c10bdd2241ee47' 
  AND token = 'LL17vrHH4LH60bBKApErIlhkXvvMNhwQNrNgefIt2Ts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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