Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a7fd9c462a714e01636311e169a685c24992a04e2fb49510415844fdff7cbaa' 
  AND token = '11nV7Py1TASty0LFH7dbFurZ0qxXhDpsdhz0UvixHw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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