Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b7179c8f9ca6dc5fb837751c7eb233d61e0e42531069a81d8c436528ab8cc184' 
  AND token = '7E5T2HdKzXel+GIx4D0LMFv0dI8BtLl4Qem19cw2/mw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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