Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e385385a1da118a62942359bf801acea0fbfd57c282de5ab66385b058452401e' 
  AND token = 'U3zT+3oOCWfFQGocDgfvHtmfx3eP0TW2iHGp1Jxg9aA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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