Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ce586fd8677ecff72e6805dc2a78f033a9d7f78fbe74627ef803608bf4f5ca72' 
  AND token = 'lATOHBhSb70/vcjEAFfZxti7A9WsIiuVKrH/OS95AXY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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