SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92ed0896140c4839224c6a5f097909c41a835b0544f8d86fccb9563b6488ef43' 
  AND token = 'ZnjGY7EzC3guBqFP8JuilX2mmQ3fWzLJZfkiNQaP3SY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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