Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0922c6e2819e4429ec911ce33aafb75087fe1c35436acfd74f39a1c66c294f70' 
  AND token = 'uxI1ZWQkE4k2wK6OPAZJC3lNp+OvT8sNnkXNXKioNBI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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