Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ac533b59af7f643149df6417ef2828611b9a26e51fa94ed2fac1732c2c2162fb' 
  AND token = 'D6YXBsWoK67dd4HMYC25nUzrkmRpbJzOuaZMgKqyKc4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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