Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'eb7afd3c85fb74977495363a6788e4909fddacc763a88e0155197c33dce4be42' 
  AND token = '2jYjqfOnnk32u3dtRBAPJQabxP14N3nmgN0HvBg91h0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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