Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fac129d792630fa5c1ba2a91ec9c311f0f18c29356d2a1c251ec57335602b14c' 
  AND token = 'NyfVqiSYH7pYur/EJWG0RC3hkgBZMOe5AS5qJKrHr4g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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