Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'beb7bc149ed0f3da933081bd09c7bd919f621e658b61736ce9e4ce06d5c97d8d' 
  AND token = 'RmZ7hIPC0nmS22rsbHJzrQeNZO4PgnR0VyLuh0jTAMg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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