Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eff2e72e67405e40ea09c7a9ca1506e1e46d11b939d60259cbcfe69fd2ad8712' 
  AND token = 'DvKzoj6RU5717r1zjTbFo7F7/apT9SqFWOi9zlFvhTc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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