Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '225a7ca319e0e90b4a2e9bfe6bd0f895ef6323f0a9fcc1047d19549b4261ab0a' 
  AND token = '4fZBvW1fuKbxJT9+7unYX70kZ+iSk9f/JuZHq0MfIHw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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