Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a960430be5551112ba535cee5b13417e7dca1544dcda931b56317a2f237a7c7' 
  AND token = '2pWytEQK7rYNlJbifmAiaj33YVj752mLWpLhdx/nxuk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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