Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1d07e09274ff8f4bdf39d1e179d3f4adcfd8abf2d0e0b618cff4fed8935266ea' 
  AND token = 'EcRTLIC66yfvLz+rZ9cf1Y/S9C/CPQlgHPgZ8dSnE3U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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