Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b885d8a520d47cf3aa63e420d72803ce79642fa6ebd48b39045c00301e0ed9f1' 
  AND token = '1/9s49SYlcIo/XW2ZWaQvTnHulRaBe3/nIWkoH69HpA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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