Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bbfbcb5c01ef2f9f967db94de95b4c6ef0b9f401c5bfb8c75973aefc8d15d86' 
  AND token = '4c6y55S2R2n5qo1lfGKXpD9bSF3dbEZ+sil/RdTftKA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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