Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3bf7b5215570e6adba0ab2afeac603ae059b2d0cb7ec8ce0d7a4d8ef797d0f19' 
  AND token = 'O4Sm94celt0w++0aBPrdJmnK0THLFe8vWx556HavfjQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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