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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7276a9b2302b0b5b346bfe625e7f71e8877ce99f3544a5a47c705a8f434cde29' 
  AND token = 'AiplgrX+prAHfV43dOA4KkSFbl+oCXh+wUwl38C1wFA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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