Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'acc1306b7b3350a7cdf5de569bb97dddc0b37c6e395f594ab122c009922c49cc' 
  AND token = '0g1M8IbxNT5efNeBNxXZ/Aow1QHstolvpxixLQFFyoo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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