Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d193596cbda49c21dbcf735e8d64ddde7b153026e41370b9212a52f188a35d0' 
  AND token = '7uXwTsPFpfyDevu0e/QhtLny17NP8OQ7R2Zl718iXtE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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