Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bdd5fd67f1ed10be6c91e32f0ae1b666d7b60634da362d917e842eb146790cd5' 
  AND token = 'ygFgnddVDGPetgucB4Xl4McfpoMyKh0T33WAtRTh1WI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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