Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf96efc21ee26b0d5f668e8c25e95cc5cbd38d574437c13009aae674d65260cf' 
  AND token = 'lHuylS9LtJJDAgGQ2T8O5wrtjMgLg3kK3wuRJazJpUk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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