Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ac7e396177722f98a6166d40fae08345c29ca9ff1a5b92cb89fb00f577a89a2' 
  AND token = 'gV4OGJDfhXXMxeNWjN64c09nHG/svvh5yQcPGeJmLmg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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