Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf41eb4d6709049cef4f4c23d9d1b667210df4b1b785373c3832cebff8294e3f' 
  AND token = 'vgl7lCHGmxX34R0h04beKPpYGUOriyTnhiSNWr6mKbM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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