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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7032c0d82a9a2852f1f39e6b58f7827898cdd3403ea56857fdbfd4ac72b6f858' 
  AND token = 'CRf1p/D0mmEiosvABuyIQ3o9hfTmo4ow0BiKh164ZTc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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