Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0481c49883d5d3be37b1a5718d485a1c2ae8bb95c609e50171be5d347f6e50e7' 
  AND token = 'w0YwombZM6dHVJesJ4lDcnSirsaA139pC8Tk0/GjdVI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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