Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08f83fe9ec67c0ea16ec7d065c6c88a7455152195bc4e30c3ff0011733f82e85' 
  AND token = 'c0aHk7LlybU9bIfP7VFtDbAsvsauqnsLsz+tMtc5sSU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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