Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80fc9c71644261c6e65c8fd7993329dedf22be889e6c921cb2f66e827e1f55f3' 
  AND token = 'gEdGY7IusMvKilCApCoa3ekuW/HjmsTS+Axzg/35i/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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