Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee3e9f707ec89197d6a8cd7c61ec94796873c1e17e1752acf277c395c0ae86d3' 
  AND token = '9MdBiAKMlKyxDDr3ytOxH5ZcBirxqC8fTovIDzp9EEo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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