Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2ae53025c7319f718f72c52c5fb7c215f517bf548806e1b62ace37bbe2db2b97' 
  AND token = '25ycRXGDv11mWNzB7DV5BaxkvqkltJ4nYdjXoVXh0qU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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